Air guide ring, panel assembly, air conditioner outdoor unit and air conditioner

Abstract

The utility model discloses an air guide ring, a panel assembly, an air conditioner outdoor unit and an air conditioner, and relates to the technical field of air conditioners, the air guide ring comprises a first shell part and a second shell part, the first shell part comprises an air duct wall, the air duct wall defines an air duct, and the air duct wall is provided with a plurality of communicating holes; the second shell part is arranged on the first shell part, a plurality of resonant cavities are defined by the second shell part and the first shell part, the resonant cavities are located on the side, away from the air duct, of the air duct wall, and one resonant cavity communicates with the air duct through at least one communicating hole. According to the technical scheme, the noise reduction and sound absorption capacity of the air guide ring can be improved.

Description

Technical Field

[0001] This utility model relates to the field of air conditioner technology, and in particular to an air guide ring, a panel assembly, an outdoor air conditioner unit, and an air conditioner. Background Technology

[0002] Existing air conditioner outdoor unit panels typically feature air guide rings and mesh covers. The air guide rings direct the airflow generated by the impeller, reducing airflow fluctuations and turbulence. The mesh covers the air outlet side of the air guide rings. However, the current air guide ring design is not optimal, resulting in limited noise reduction capabilities for the outdoor unit. Utility Model Content

[0003] The main purpose of this utility model is to propose an air guide ring, a panel assembly, an outdoor air conditioning unit, and an air conditioner, which aims to improve the noise reduction and sound absorption capabilities of the air guide ring.

[0004] To achieve the above objectives, the air guide ring proposed in this utility model includes:

[0005] A first housing includes an air duct wall defining an air duct, the air duct wall having a plurality of connecting holes; and

[0006] The second shell is arranged in a split manner, and the second shell is connected to the first shell. Together with the first shell, they enclose a plurality of resonant cavities. The resonant cavities are located on the side of the air duct wall away from the air duct. Each resonant cavity is connected to the air duct through at least one of the connecting holes.

[0007] In one embodiment, the duct wall has a protrusion on the side away from the duct corresponding to the connecting hole, and the connecting hole penetrates the end face of the protrusion near the second shell portion.

[0008] In one embodiment, the protrusion height of the protrusion is L2, where 0.1mm < L2 ≤ 10mm.

[0009] In one embodiment, the protrusion heights of at least two of the protrusions are set to be different.

[0010] In one embodiment, the protrusion direction of the protrusion post and the extension direction of the corresponding connecting hole are configured to be the same.

[0011] In one embodiment, the protrusion direction of the protrusion is intersected with the axis of the air guide ring.

[0012] In one embodiment, a plurality of column hole groups are sequentially distributed along the circumference of the air guide ring. Each column hole group includes at least two protruding columns. The protruding columns in the same column hole group have the same protrusion direction, and the protruding columns in at least two column hole groups have different protrusion directions.

[0013] In one embodiment, the sidewall of the resonant cavity protrudes from the air duct wall and is integrally formed with the air duct wall.

[0014] In one embodiment, the diameter of the connecting hole is D, where 1mm ≤ D ≤ 5mm.

[0015] In one embodiment, the position of the connecting hole on the duct wall corresponds to the center point of the resonant cavity, and the distance between the center points of two adjacent resonant cavities is W, where 5mm≤W≤15mm.

[0016] In one embodiment, the resonant cavity has a length of M1, a width of M2, and a height of M3, with 5mm ≤ M1 ≤ 15mm, and / or 5mm ≤ M2 ≤ 15mm, and / or 5mm ≤ M3 ≤ 15mm.

[0017] In one embodiment, the cavity wall thickness of the resonant cavity is h, where 0.8 mm ≤ h ≤ 2 mm.

[0018] In one embodiment, at least two resonant cavities are provided along the radial direction of the air guide ring, and two adjacent resonant cavities are connected through a through hole.

[0019] In one embodiment, the first housing portion is detachably mounted on the second housing portion.

[0020] In one embodiment, one of the first shell portion and the second shell portion is provided with a locking post, and the other is provided with a locking hole, wherein the locking post is inserted into and locked in the locking hole.

[0021] In one embodiment, the duct wall includes a cylindrical wall section and a guide wall section. The guide wall section is located on the air inlet side of the cylindrical section, and the cross-sectional profile of the guide wall section gradually narrows inward along the air inlet direction. The retaining post is located on the side of the guide wall section near the cylindrical wall section, and the connecting holes are at least distributed on the cylindrical wall section.

[0022] In one embodiment, the locking post extends along the axial direction of the air guide ring and is inserted into the locking hole.

[0023] This utility model also proposes a panel assembly, including the aforementioned air guide ring, wherein the panel has an air outlet, and the air guide ring is disposed at the air outlet.

[0024] This utility model also proposes an outdoor unit for an air conditioner, including a fan, a housing, and the aforementioned panel assembly. The side of the housing has a mounting opening, the panel assembly is installed in the mounting opening, and the fan is installed inside the housing.

[0025] This utility model also proposes an air conditioner, including the aforementioned air guide ring.

[0026] The technical solution of this utility model has two aspects. First, the connecting holes, as microporous structures, can improve the development of the airflow boundary layer on the duct wall and improve flow separation, thereby reducing vortex noise. Furthermore, as microporous structures, the connecting holes can also play a certain role in sound absorption, absorbing some sound wave energy and reducing noise propagation. Second, when sound waves enter the resonant cavity through the connecting holes, standing waves can be formed within the resonant cavity to dissipate sound wave energy, thereby reducing noise radiation and achieving a sound absorption effect. Thus, by setting connecting holes and a resonant cavity on the air guide ring, the noise reduction and sound absorption capabilities of the air guide ring can be improved, thereby improving the noise problem of the outdoor unit of the air conditioner. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 A schematic diagram of the structure of an embodiment of the air guide ring provided by this utility model;

[0029] Figure 2 for Figure 1 A cross-sectional view of the air guide ring shown;

[0030] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0031] Figure 4 for Figure 1 Another cross-sectional view of the air guide ring shown;

[0032] Figure 5 for Figure 4 A magnified view of a section at point B in the middle;

[0033] Figure 6 A schematic diagram of the structure of an embodiment of the panel assembly provided by this utility model;

[0034] Figure 7 An exploded view of an embodiment of the outdoor unit of an air conditioner provided by this utility model;

[0035] Figure 8 This is a schematic diagram showing the power test results of the air guide ring of this utility model and a conventional air guide ring;

[0036] Figure 9 This is a schematic diagram showing the noise test results of the air guide ring of this utility model and a conventional air guide ring.

[0037] Explanation of icon numbers:

[0038] 101. Outdoor unit of air conditioner; 102. Panel assembly; 103. Air duct; 104. Resonance cavity; 10. Air guide ring; 11. First shell; 111. Connecting hole; 112. Air duct wall; 113. Cylindrical wall section; 114. Air guide wall section; 115. Protruding column; 116. Locking column; 12. Second shell; 121. Locking hole; 122. Mounting column; 20. Panel; 21. Air outlet; 30. Mesh cover; 40. Fan; 42. Impeller; 50. Housing; 51. Mounting port.

[0039] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0041] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0042] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0043] Existing air conditioner outdoor unit panels typically feature air guide rings and mesh covers. The air guide rings direct the airflow generated by the impeller, reducing airflow fluctuations and turbulence. The mesh covers the air outlet side of the air guide rings. However, the current air guide ring design is not optimal, resulting in limited noise reduction capabilities for the outdoor unit.

[0044] Specifically, existing air conditioner outdoor units typically design the air guide ring, panel, and motor bracket as a single piece of sheet metal or casting to save manufacturing costs and improve production efficiency. The fan includes a motor and an impeller mounted on the motor bracket, with the impeller partially extending into the air guide ring. Therefore, due to limitations in the molding process, the inner surface of the air guide ring is usually smooth. This air guide ring can only rely on its material properties to provide a weak sound absorption effect; that is, its ability to improve the aerodynamic noise of the fan and the air conditioner outdoor unit is limited.

[0045] In view of this, the present invention proposes an air guide ring that can improve the noise reduction and sound absorption capabilities of the air guide ring and improve the noise problem of the outdoor unit of the air conditioner.

[0046] Please see Figures 1 to 3 In one embodiment of the present invention, the air guide ring 10 has an air duct wall 112, which defines an air duct 103. The air duct wall 112 is provided with a plurality of connecting holes 111. The air duct wall 112 has a resonant cavity 104 on the side away from the air duct 103. A resonant cavity 104 is connected to the air duct 103 through at least one connecting hole 111.

[0047] Specifically, on the one hand, the connecting hole 111, as a microporous structure, can improve the development of the airflow boundary layer in the duct wall 112 and improve flow separation, thereby reducing vortex noise. Furthermore, as a microporous structure, the connecting hole 111 can also play a certain sound absorption role, absorbing some sound wave energy and reducing noise propagation. On the other hand, when sound waves enter the resonant cavity 104 through the connecting hole 111, standing waves can be formed within the resonant cavity 104 to dissipate sound wave energy, thereby reducing noise radiation and achieving a sound absorption effect. Thus, by setting the connecting hole 111 and the resonant cavity 104 on the air guide ring 10, the noise reduction and sound absorption capabilities of the air guide ring 10 can be improved, thereby improving the noise problem of the outdoor unit 101 of the air conditioner.

[0048] In addition, it is worth mentioning that the connecting hole 111, as a microporous structure, can effectively reduce the air outlet resistance by improving the development of the airflow boundary layer on the duct wall 112, thereby improving the efficiency of the fan 40.

[0049] It is understood that the air guide ring 10 of this utility model is not limited to application in air conditioners, especially outdoor units of air conditioners, but can also be applied to indoor units of air conditioners, or other equipment, such as heaters, fresh air systems, or fans. To facilitate understanding of the beneficial effects of the air guide ring 10 of this utility model, the following explanation will take an outdoor unit of an air conditioner as an example.

[0050] Specifically, you may refer to Figure 7 In one embodiment of the outdoor unit of this utility model, the outdoor unit includes a fan 40, a housing 50, a panel 20, and an air guide ring 10. The side of the housing 50 has a mounting opening 51, the panel 20 is mounted on the mounting opening 51, the air guide ring 10 is mounted on the panel 20, and the fan 40 is mounted inside the housing. Optionally, the fan 40 includes a motor (not shown in the attached drawings) and a fan wheel 41 driven and connected to the motor. The motor is located on the panel 20, and the fan wheel 41 extends at least partially into the air guide ring 10. The fan wheel 41 is an axial flow fan wheel.

[0051] It should be noted that the air duct 103 of this utility model refers to the channel space defined by the components of the outdoor unit of the air conditioner. This channel space is used for the airflow generated by the fan, and therefore includes the portion of space surrounded by the inner circumferential surface of the air guide ring 10. Thus, the inner circumferential surface of the air duct wall 112 defines the air duct, meaning that a portion of the air duct is formed on the inner circumferential surface of the air duct wall 112. Air flowing towards the outside of the outdoor unit of the air conditioner will flow through and contact the inner circumferential surface of the air duct wall 112.

[0052] The resonant cavity 104 can be formed by the structure of the air guide ring 10, or it can be defined by the air guide ring 10 and other parts.

[0053] For example, please see Figure 3 In one embodiment, the air guide ring 10 includes a first shell portion 11 and a second shell portion 12 connected to each other. The first shell portion 11 includes an air duct wall 112, and the second shell portion 12 is connected to the first shell portion 11, together forming a plurality of resonant cavities 104. The resonant cavities 104 are located on the side of the air duct wall 112 away from the air duct 103, and each resonant cavity 104 is connected to the air duct 103 through at least one connecting hole 111. In this way, the air guide ring 10 forms the resonant cavity 104 using its own structure, which is beneficial to ensuring the airtightness of the resonant cavity 104 and facilitates the adjustment of its structural dimensional parameters to adjust its noise reduction performance.

[0054] Of course, in other embodiments, the air guide ring 10 may only include a first shell portion 11 with an air duct wall 112. The air guide ring 10 is installed at the air outlet of the panel 20, and the panel 20 has a sealing plate surrounding the outer periphery of the first shell portion 11. The sealing plate and the first shell portion 11 together define the resonant cavity 104. That is, in this embodiment, the resonant cavity 104 is defined by the air guide ring 10 and the panel 20.

[0055] Please see Figure 3 In one embodiment, the first shell portion 11 and the second shell portion 12 are optionally separate, which facilitates the manufacturing and processing of the air guide ring 10 and allows for adjustment of the dimensional parameters of the resonant cavity 104 to achieve the desired noise frequency band reduction. Optionally, the first shell portion 11 and the second shell portion 12 are separately injection molded and then assembled into a single unit. The first shell portion 11 and the second shell portion 12, made of plastic, have superior sound wave reflection and penetration blocking characteristics compared to sheet metal, thus contributing to noise reduction. Of course, in other embodiments, the first shell portion 11 and the second shell portion 12 can also be integrally molded.

[0056] Optionally, the first housing 11 is detachably mounted on the second housing 12. This facilitates the disassembly and maintenance of both the first and second housings 11 and 12. If the connecting hole 111 or the resonant cavity 104 is found to be blocked, the first and second housings 11 and 12 can be disassembled to better remove the blockage, thereby restoring the sound absorption performance of the air guide ring 10 to its original state. Of course, in other embodiments, the first housing 11 may also be fixedly mounted on the second housing 12 by welding or bonding.

[0057] Please see Figure 3 Optionally, one of the first shell portion 11 and the second shell portion 12 is provided with a locking post 116, and the other is provided with a locking hole 121. The locking post 116 is inserted into and locked in the locking hole 121. In this way, the locking and fixing of the first shell portion 11 and the second shell portion 12 is achieved through the interference fit between the locking post 116 and the locking hole 121, which is simple in structure and easy to install.

[0058] Please see Figure 3 Optionally, the duct wall 112 includes a cylindrical wall section 113 and a guide wall section 114. The guide wall section 114 is located on the air inlet side of the cylindrical section, and the outer contour of the cross-section of the guide wall section 114 gradually tapers inward along the air inlet direction. That is, the guide wall section 114 and the cylindrical wall section 113 are distributed sequentially along the air inlet direction of the air guide ring 10, or in other words, the guide wall section 114 is located closer to the fan, and the airflow first flows through the guide wall section 114 and then through the cylindrical wall section 113. In this way, by setting the guide wall section 114, which is roughly in the shape of a funnel, it is beneficial to improve the air guiding effect of the air guide ring 10, thereby improving the fan efficiency and reducing aerodynamic noise.

[0059] Optionally, the outer contour of the cylindrical wall section 113 is circular, that is, the inner surface of the cylindrical wall section 113 is cylindrical. Of course, in some other embodiments, the inner surface of the cylindrical wall section 113 can also be a polygonal prism, an elliptical cylinder, etc.; in still other embodiments, the guide wall section 114 can be omitted, and the entire air duct wall 112 can be a cylindrical wall section 113.

[0060] Please see Figure 3 Optionally, the retaining post 116 is located on the side of the guide wall section 114 near the cylindrical wall section 113, and the connecting holes 111 are at least distributed on the cylindrical wall section 113. Thus, by placing the retaining post 116 on the guide wall section 114, its interference with the arrangement of the resonant cavity 104 can be reduced, and since it is concealed on the inner side of the guide wall section 114, the outer side of the air guide ring 10 on the air inlet side is cleaner and more aesthetically pleasing. Of course, in other embodiments, the retaining post 116 can also be located on the cylindrical wall section 113, or on the side of the guide wall section 114 away from the cylindrical section.

[0061] Please see Figure 3 Optionally, the retaining post 116 extends along the axial direction of the air guide ring 10 and is inserted into the retaining hole 121. That is, the assembly direction of the first shell portion 11 and the second shell portion 12 is along the axial direction of the air guide ring 10. This helps to reduce the radial profile dimension of the air guide ring 10, thereby facilitating the miniaturization design of the air guide ring 10. Of course, in other embodiments, the retaining post 116 may also extend along the radial direction of the air guide ring 10 and be inserted into the retaining hole 121.

[0062] Please see Figure 1 and Figure 6 Optionally, the second housing 12 has a mounting post 122 on its air outlet edge, and the panel 20 is fastened to the mounting post 122 by screws. The mounting post 122 and the retaining post 116 extend in the same direction. This facilitates the installation and removal of the panel 20 and the air guide ring 10, and also facilitates the manufacturing and shaping of the second housing 12 and the mounting post 122. Of course, in other embodiments, the second housing 12 can also be mounted on the panel 20 by snap-fitting, riveting, or welding.

[0063] Please see Figure 3 Optionally, the connecting holes 111 are distributed on both the cylindrical wall section 113 and the flow guiding wall section 114. Thus, by providing connecting holes 111 and their corresponding resonant cavities 104 on both the cylindrical wall section 113 and the flow guiding wall section 114, the number of resonant cavities 104 can be increased to improve the overall sound absorption and noise reduction effect of the air guide ring 10. Of course, in other embodiments, they may be arranged only on the cylindrical wall section 113 or only on the flow guiding wall section 114.

[0064] Please see Figures 3 to 5Optionally, the duct wall 112 has a protrusion 115 on the side away from the duct 103 corresponding to the connecting hole 111, with the connecting hole 111 penetrating the end face of the protrusion 115 near the second shell portion 12. In this way, the protrusion 115 structure effectively extends the depth of the connecting hole 111, facilitating adjustment of the hole depth as needed to reduce the required noise frequency band. Of course, in other embodiments, the protrusion 115 may not be provided.

[0065] Specifically, each resonant cavity has a natural frequency (i.e., resonant frequency) determined by its size. Its sound absorption mechanism is the same as that of porous materials, dissipating sound energy through viscous friction to convert it into heat energy. In this embodiment of the invention, the resonant frequency f of each resonant cavity 104 is... r The natural frequency (i.e., the resonant frequency f) depends on the depth L of the connecting hole 111, the cross-sectional area S of the connecting hole 111, the diameter D of the connecting hole 111, and the volume V of the resonant cavity 104. r The calculation formula can be:

[0066]

[0067] Where c is the speed of sound in air, in m / s; the depth L of the connecting hole 111 includes the protrusion height L2 of the protrusion 115 and the wall thickness L1 of the air duct wall 112, that is, L=L1+L2.

[0068] Without loss of generality, the sound absorption characteristics of a resonant cavity are that its sound absorption coefficient is the highest near the resonant frequency, and the sound absorption coefficient decreases sharply as it deviates from the resonant frequency, and the sound absorption frequency range is generally relatively narrow. Therefore, optionally, the protrusion heights of at least two protrusions 115 are set to be different. In this way, by setting the hole depth L of the connecting hole 111 of different resonant cavities 104 to be different, the resonant frequency range covered by all resonant cavities 104 can be increased, thereby facilitating sound absorption for noise over a wider frequency range.

[0069] Optionally, the sidewalls of the resonant cavity 104 protrude from the air duct wall 112 and are integrally formed with the air duct wall 112. It should be noted that the sidewalls of the resonant cavity 104 refer to the cavity walls surrounding the connecting hole 111. Taking the resonant cavity 104 as a cuboid as an example, its sidewalls refer to the four cavity walls surrounding the connecting hole 111, its top wall refers to the cavity wall with the connecting hole 111 (located on the air duct wall 112), and its bottom wall refers to the cavity wall opposite to the connecting hole 111 (located on the second shell portion 12). It is understood that the shape of the resonant cavity 104 is not limited to a cuboid; it can also be a cylinder, a polygonal prism, or other regular shapes, or other irregular shapes. This application does not specifically limit its shape in this regard.

[0070] Thus, the air duct wall 112 directly forms the top and side walls of the resonant cavity 104, resulting in a simple structure and saving assembly steps, thereby improving the production efficiency of the air guide ring 10 and reducing production costs. Of course, in other embodiments, the air duct wall 112 and the side walls of the resonant cavity 104 can be separately configured. For example, the side walls of the resonant cavity 104 can be integrally formed with the second shell portion 12, or the side walls of the resonant cavity 104, the second shell portion 12, and the first shell portion 11 can all be separately configured but assembled into one unit.

[0071] Optionally, the air duct wall 112 is integrally molded into the sidewall of the resonant cavity 104 using an injection molding process. Of course, in other embodiments, other processes can also be used to achieve integral molding.

[0072] Optionally, the protrusion height of the protrusion 115 is L2, where 0.1mm < L2 ≤ 10mm. This avoids the manufacturing difficulties caused by an excessively large protrusion height of the protrusion 115, thus improving the production yield of the air guide ring 10, and also prevents the protrusion 115 from easily bending and being damaged due to excessive protrusion height. Furthermore, it allows for a wider range of noise frequencies that can be absorbed by all resonant cavities, enabling the absorption of low-frequency noise in the range of 60Hz to 500Hz. Of course, in other embodiments, the protrusion height L2 can also be other values, such as 11mm ≤ L ≤ 50mm, etc.

[0073] Please see Figure 3 and Figure 5 Optionally, the protrusion direction of the protrusion 115 intersects the axis of the air guide ring 10. This also facilitates the manufacturing and forming of the protrusion 115. Please refer to... Figure 4 and Figure 5 Optionally, multiple sets of column holes are sequentially distributed along the circumference of the air guide ring 10. Each set of column holes includes at least two protruding columns 115. The protruding directions of the protruding columns 115 within the same set of column holes are set to be the same, and the protruding directions of the protruding columns 115 in at least two sets of column holes are set to be different. That is, the air duct wall 112 is divided into multiple regions (including) along the circumference of the air guide ring 10. Figure 4 and Figure 5 As shown in regions P1, P2, and P3, all the protrusions 115 within each region constitute a group of protrusions. All protrusions 115 within the same group extend and protrude in the same direction, while the extension directions of the protrusions 115 in different groups are not the same. For example, Figure 5 All protrusions 115 in region P2 extend vertically, while all protrusions 115 in region P1 extend to the left from bottom to top, and all protrusions 115 in region P3 extend to the right from bottom to top.

[0074] This simplifies the molding die structure of the first shell portion 11, thereby reducing its die cost, and also improves the molding yield of the protrusions 115 and the connecting holes 111. Of course, in other embodiments, each protrusion 115 may be configured to extend radially along the air guide ring 10.

[0075] It should be noted that, in this embodiment of the invention, the distribution along the axial direction should be interpreted broadly. It does not specifically refer to the case where multiple protruding pillars 115 are distributed completely parallel to the axis of the guide ring 10, but also includes the case where multiple protruding pillars 115 are distributed along directions intersecting the axis of the guide ring 10. Similarly, the distribution along the radial direction and the circumferential direction are treated similarly. For further details, please refer to... Figure 1 and Figure 2 In this embodiment of the utility model, the axis of the air guide ring 10 extends in the front-to-back direction.

[0076] Please see Figure 3 and Figure 5 Optionally, the protrusion direction of the protrusion 115 and the extension direction of the corresponding connecting hole 111 are configured to be the same. That is, the depth direction of the connecting hole 111 on the protrusion 115 is the same as the protrusion direction of the protrusion 115. This facilitates the manufacturing and forming of the connecting hole 111 and the protrusion 115, and ensures a more uniform wall thickness distribution of the connecting hole 111, thereby reducing the risk of bending damage to the protrusion 115. Of course, in other embodiments, the protrusion direction of the protrusion 115 and the extension direction of the corresponding connecting hole 111 may be configured to be different.

[0077] Similarly, in this embodiment, the extending directions of the connecting holes 111 on the protruding posts 115 within the same group of posts are set to be the same, and the extending directions of the connecting holes 111 on the protruding posts 115 of at least two groups of posts are set to be different. For example, Figure 5 All connecting holes 111 in region P2 extend vertically, while all connecting holes 111 in region P1 extend to the left from bottom to top, and all connecting holes 111 in region P3 extend to the right from bottom to top.

[0078] Optionally, the diameter of the connecting hole 111 is D, where 1mm ≤ D ≤ 5mm. That is, the radius of the connecting hole 111 ranges from 0.5mm to 2.5mm. The cross-sectional shape of the connecting hole 111 is not limited to a circle; it can also be square, triangular, or elliptical, etc. It is understood that if the diameter D of the connecting hole 111 is set too large, it will result in an excessively high opening ratio, causing airflow disturbance and increasing aerodynamic drag, and may also cause unexpected aerodynamic noise. If the diameter D of the connecting hole 111 is set too small, on the one hand, it is difficult to manufacture the connecting hole 111; on the other hand, noise is difficult to propagate into the resonant cavity 104. Of course, in other embodiments, the diameter D can also be other values, such as 6mm ≤ D ≤ 20mm, etc.

[0079] Optionally, the position of the connecting hole 111 on the air duct wall 112 corresponds to the center point of the resonant cavity 104, and the distance between the center points of two adjacent resonant cavities 104 is W, where 5mm ≤ W ≤ 15mm. That is, the connecting hole 111 is located in the middle of the top wall of the resonant cavity 104, and the distance between two adjacent connecting holes 111 ranges from 5mm to 15mm. It can be understood that if the distance W is set too large, the number of resonant cavities 104 that can be arranged will be relatively limited; if the distance W is set too large, the volume of the resonant cavity 104 will be too small, which is not conducive to its manufacturing and forming. Of course, in other embodiments, the distance W can also be other values, such as 20mm ≤ W ≤ 50mm, or the connecting hole 111 can be located on the side edge of the resonant cavity 104.

[0080] Optionally, the length of the resonant cavity 104 is M1, the width is M2, and the height is M3, where 5mm ≤ M1 ≤ 15mm, and / or 5mm ≤ M2 ≤ 15mm, and / or 5mm ≤ M3 ≤ 15mm. That is, the volume V of each resonant cavity 104 is (10mm * 10mm * 10mm) ± 50%. This avoids the situation where the volume of the resonant cavity 104 is too large, resulting in a limited number of resonant cavities 104. Conversely, if the spacing W is set too large, the volume of the resonant cavity 104 will be too small, which is detrimental to its manufacturing.

[0081] Optionally, the wall thickness of the resonant cavity 104 is h, where 0.8 mm ≤ h ≤ 2 mm; that is, the thickness of the sidewalls, top wall, and bottom wall of the resonant cavity 104 ranges from 0.8 mm to 2 mm. This ensures sufficient structural strength of the resonant cavity 104 while minimizing the weight and manufacturing cost of the air guide ring 10. Of course, in other embodiments, the wall thickness h can also be other values, such as 3 mm ≤ h ≤ 10 mm.

[0082] Please see Figure 3 and Figure 5Optionally, one resonant cavity 104 is provided along the radial direction of the air guide ring 10. That is, only one layer of resonant cavity 104 is provided in the radial direction of the air guide ring 10. In this way, the outline size and volume of the air guide ring 10 can be avoided from being too large, which would affect the miniaturization design of the air conditioner outdoor unit. Of course, in other embodiments, at least two resonant cavities 104 may be provided along the radial direction of the air guide ring 10, and adjacent two resonant cavities 104 may be connected through a through hole. That is, multiple layers of resonant cavities 104 may be provided in the radial direction of the air guide ring 10.

[0083] Please see Figure 6 This utility model also proposes a panel assembly 102, which includes a panel 20 and the aforementioned air guide ring 10. The specific structure of the air guide ring 10 is as described in the above embodiments. Since this panel assembly 102 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. Among them, the panel 20 has an air outlet 21, and the air guide ring 10 is disposed at the air outlet 21.

[0084] Optionally, the panel assembly 102 also includes a mesh cover 30, which covers the air outlet side of the air outlet 21, that is, the outside of the air outlet 21. Optionally, the mesh cover 30 is detachably mounted on the panel 20 by screws or clips. In this way, the mesh cover 30 can prevent foreign objects or small animals from entering the air conditioner outdoor unit, and can also prevent human body parts, such as hands, from being accidentally put into the air conditioner outdoor unit and being hit by the high-speed rotating impeller, thus preventing injury.

[0085] Please see Figure 7 This utility model also proposes an outdoor unit for an air conditioner. The outdoor unit 101 includes a fan 40, a housing 50, and the aforementioned panel assembly 102. The specific structure of the air guide ring 10 of the panel assembly 102 is as described in the above embodiments. Since this outdoor unit 101 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The housing 50 has a mounting opening 51 on its side, the panel assembly 102 is installed in the mounting opening 51, and the fan 40 is installed inside the housing 50.

[0086] Specifically, respectively with Figure 1 The air guide ring 10 of this application and the conventional air guide ring 10 (without connecting holes and resonant cavities, but with the same other parameters) are installed on the outdoor unit 101 of the air conditioner, and then tests are conducted to obtain test results regarding the power and noise of the fan 40. Specific test results are shown in Table 1 below and the accompanying drawings in the specification. Figure 8 and Figure 9 .

[0087] From Table 1, Figure 8 and Figure 9 It can be seen that, under the condition of achieving basically the same air volume (e.g., air volume of 2804m³), 3 / h and 2801m 3 (The airflow rate can be considered basically the same). The air conditioner outdoor unit 101 using the air guide ring 10 in this application requires lower motor power and generates lower noise. Generally speaking, the operating airflow of the air conditioner outdoor unit 101 is typically set at 2500 m³ / h. 3 / h to 2800m 3 As can be seen from the data, within this airflow range, the required motor power of the present invention is reduced more significantly, meaning the fan 40 is more efficient and the noise is also reduced more. Therefore, it can be seen that the present invention effectively improves the efficiency of the fan 40 and reduces noise.

[0088] Table 1

[0089]

[0090] This utility model also proposes an air conditioner, which includes the aforementioned air guide ring. The specific structure of the air guide ring is as described in the above embodiments. Since this air conditioner adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0091] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An air guide ring, characterized in that, include: The first shell includes an air duct wall that defines an air duct and has a plurality of connecting holes. and The second shell is arranged in a split manner, and the second shell is connected to the first shell. Together with the first shell, they enclose a plurality of resonant cavities. The resonant cavities are located on the side of the air duct wall away from the air duct. Each resonant cavity is connected to the air duct through at least one of the connecting holes.

2. The air guide ring as described in claim 1, characterized in that, The air duct wall has a protruding post on the side away from the air duct, corresponding to the connecting hole, and the connecting hole penetrates the end face of the protruding post near the second shell part.

3. The air guide ring as described in claim 2, characterized in that, The protrusion height of the protrusion is L2, where 0.1mm < L2 ≤ 10mm; And / or, at least two of the protrusions are set to have different protrusion heights; And / or, the protrusion direction of the protrusion post and the extension direction of the corresponding connecting hole are configured to be the same; And / or, the protrusion direction of the protrusion is intersected with the axis of the air guide ring; And / or, a plurality of column hole groups are sequentially distributed along the circumference of the air guide ring, each column hole group includes at least two protruding columns, the protruding directions of the protruding columns in the same column hole group are set to be the same, and the protruding directions of the protruding columns in at least two column hole groups are set to be different. And / or, the sidewall of the resonant cavity protrudes from the air duct wall and is integrally formed with the air duct wall.

4. The air guide ring as described in claim 1, characterized in that, The diameter of the connecting hole is D, where 1mm ≤ D ≤ 5mm; And / or, the position of the connecting hole on the duct wall corresponds to the center point of the resonant cavity, and the distance between the center points of two adjacent resonant cavities is W, 5mm≤W≤15mm.

5. The air guide ring as described in claim 1, characterized in that, The resonant cavity has a length of M1, a width of M2, and a height of M3, with 5mm ≤ M1 ≤ 15mm, and / or 5mm ≤ M2 ≤ 15mm, and / or 5mm ≤ M3 ≤ 15mm; And / or, the cavity wall thickness of the resonant cavity is h, 0.8mm≤h≤2mm; And / or, at least two resonant cavities are provided along the radial direction of the air guide ring, and two adjacent resonant cavities are connected through a through hole.

6. The air guide ring as described in any one of claims 1 to 5, characterized in that, The first housing portion is detachably mounted on the second housing portion.

7. The air guide ring as described in claim 6, characterized in that, One of the first shell portion and the second shell portion is provided with a locking post, and the other is provided with a locking hole. The locking post is inserted into and locked in the locking hole.

8. The air guide ring as described in claim 7, characterized in that, The duct wall includes a cylindrical wall section and a guide wall section. The guide wall section is located on the air inlet side of the cylindrical section, and the cross-sectional profile of the guide wall section gradually narrows inward along the air inlet direction. The retaining post is located on the side of the guide wall section close to the cylindrical wall section, and the connecting holes are at least distributed on the cylindrical wall section. And / or, the locking post extends along the axial direction of the air guide ring and is inserted into the locking hole.

9. A panel assembly, characterized in that, The device includes a panel and an air guide ring as described in any one of claims 1 to 8, wherein the panel has an air outlet and the air guide ring is disposed at the air outlet.

10. An outdoor unit for an air conditioner, characterized in that, It includes a fan, a housing, and a panel assembly as described in claim 9, wherein the side of the housing has a mounting opening, the panel assembly is mounted in the mounting opening, and the fan is mounted inside the housing.

11. An air conditioner, characterized in that, Includes the air guide ring as described in any one of claims 1 to 8.

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